SFTPD His Tag Protein, Human
SKU: 73479143959

SFTPD His Tag Protein, Human

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Description

SFTPD His Tag Protein, HumanProduct Specification Species Human Synonyms SP D; PSP D; SFTP4; COLEC7 Accession P35247 Amino Acid Sequence Ala21 Phe375, with C terminal His Expression System HEK293 Molecular Weight 37 47kDa (Reducing) Purity 95% by SDS PAGE Endotoxin <0. 1EU g Conjugation Unconjugated Tag His Tag Physical Appearance Lyophilized Powder Storage Buffer PBS, pH7. 4. Reconstitution Reconstitute at 0. 1 1 mg ml according to the size in ultrapure water after rapid

Product Specification


Species Human
Synonyms SP-D; PSP-D; SFTP4; COLEC7
Accession P35247
Amino Acid Sequence Ala21-Phe375, with C-terminal His
Expression System HEK293
Molecular Weight 37-47kDa (Reducing)
Purity >95% by SDS-PAGE
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag His Tag
Physical Appearance Lyophilized Powder
Storage Buffer PBS, pH7.4.
Reconstitution Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.
Stability & Storage · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.
· 3 months, -20 to -80℃ under sterile conditions after reconstitution.
· 1 week, 2 to 8℃ under sterile conditions after reconstitution.
· Please avoid repeated freeze-thaw cycles.
Reference

1.Kuroki Y, Voelker DR. Pulmonary surfactant proteins. J Biol Chem. 1994; 269:25943–25946.
2.Sano H, Kuroki Y. The lung collectins, SP-A and SP-D, modulate pulmonary innate immunity. Mol Immunol. 2005; 42:279–287.
3.Hu F, Ding G, Zhang Z, Gatto LA, Hawgood S, Poulain FR, et al. Innate immunity of surfactant proteins A and D in urinary tract infection with uropathogenic escherichia coli. J Innate Immun. 2015; 22:9–20.
4.Liu Z, Shi Q, Liu J, Abdel-Razek O, Xu Y, Cooney RN, et al. Innate immune molecule surfactant protein d attenuates sepsis-induced acute pancreatic injury through modulating apoptosis and NF-κB-mediated Inflammation. Sci Rep. 2015; 5:17798.
5.Stahlman MT, Gray ME, Hull WM, Whitsett JA. Immunolocalization of surfactant protein-D (SP-D) in human fetal, newborn, and adult tissues. J Histochem Cytochem. 2002; 50:651–660.

Background

Surfactant Protein D (SP-D, gene name: SFTPD) is a pattern recognition molecule belonging to the family of collections expressed in multiple human organ systems, including the lungs. SFTPD is located at the genomic position 10q22.2‐23.1. In addition to the respiratory system, SFTPD is also expressed in several other tissues/organs, such as the brain, pancreas, kidney, gut, endothelium, and reproductive system. SFTPD was initially identified to be expressed and secreted in lung alveolar epithelial type II cells and plays a crucial role in protecting the lung from inhaled microorganisms, organic antigens, and toxins by recruiting the innate immune system and consequently regulating inflammatory activities. SFTPD is a critical component of the innate immune system intrinsically linked to energy metabolism. SFTPD plays an important role in the innate immune system by binding bacteria, viruses, fungi, and parasites for clearance via opsonization in phagocytes, as well as aiding in the removal of allergens.

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SKU: 73479143959

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Tracy M
Chelsea, US
★★★★★ 5
Highly recommended
Size: 1 PT
very sweet and reasonable price, glad Amazon is providing cheaper and high quality fruits for the family, can not live without Amazon!
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Reviewed in the United States on May 18, 2026
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Kayla Franklin
San Leandro, US
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Delicious fresh Blueberries at a fraction of the price!
Size: 1 PT
Absolutely delicious, and so much less expensive than at the store!! Beautiful plump Blueberries that taste great! At first I wasn't sure, since they cost so much less than at any store, but I decided to try them just in case they turned out to be good, and to leave a review for others. They came inside a foil-interior brown bag, each with rubber bands to keep them closed (great idea) and with a frozen water bottle to help keep them cool! That was a very nice added bonus.
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Alyssa
Pawtucket, US
★★★★★ 5
Fresh and Sweet Strawberries with Good Texture
Size: 16 OZ
The 1 lb package of strawberries arrived fresh with a bright color and appealing appearance. The berries had a good balance of sweetness and natural tartness, making them enjoyable on their own or added to yogurt, smoothies, cereal, or desserts. 🍓 The texture was firm without being overly hard, and most of the strawberries were a good size with minimal bruising. They rinsed easily and stayed fresh for several days when refrigerated properly. The 1 lb container provides a convenient amount for snacking or sharing. Overall, these strawberries offered good freshness, flavor, and versatility for everyday use.
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Reviewed in the United States on May 12, 2026
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Corinne Kahan
Pawtucket, US
★★★★★ 5
Great price, fresh, good flavor. Will order again.
Size: 16 OZ
I took a chance, ordered 2, and was pleasantly surprised by these. Great price, and amazing flavor. 90% of them were ripe and ready to eat. Plump, good size strawberries. They for all healthy and moist as they should be, not one was dried out or starting to go bad. I will buy them again from Amazon now that I know they have quality strawberries to deliver. They were "durable" and survived the delivery to the porch just fine. Yummy!
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Fort Morgan, US
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Best strawberries
Size: 16 OZ
This was the best order of strawberries I ever had. They were fresh and tasty and no moisture on the outside.
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Reviewed in the United States on May 12, 2026

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